Pentek® FloPlusTM O.5 micron Cartridges combine the benefit of small sediment particle reduction as well as chlorine bad taste and odor removal. The FloPlus Filters are certified to reduce cysts such as Cryptosporidium and Giardia. In addition this product has extremely low pressure drops and high flow rates. These cartridges are ideal for applications where pressure drop and low flow have been an ongoing problem in the past. Pentek® FloPlusTM Filters are tested and certified by NSF International to NSF/ANSI standard 42 for material requirements. Available in four sizes:2-7/8" x 9-3/4", 2-7/8" x 20", 4-5/8" x 9-3/4" and 4-5/8" x 20".